diff --git a/src/Lib/Serialization.js b/src/Lib/Serialization.js
index a78f699f7a..150b43b20f 100644
--- a/src/Lib/Serialization.js
+++ b/src/Lib/Serialization.js
@@ -19,16 +19,15 @@ exports._utxoFromBytes = (helper) => (buf) => {
     },
     output: {
       address: mkAddress(utxo.output().address()),
-      // TODO
-      value: undefined,
-      // This very well might be `undefined`, so we need to wrap it in a `Maybe`
+      value: helper.decodeValue(
+        mkValue(helper.fromString, utxo.output().amount())
+      ),
       data_hash: maybe(helper.just, helper.nothing, utxo.data_hash()),
     },
   };
 };
 
-const mkTransactionId = (input) =>
-  Buffer.from(input.transaction_id().to_bytes()).toString("hex");
+const mkTransactionId = (input) => toHex(input.transaction_id().to_bytes());
 
 const mkAddress = (addr) => {
   const baseAddr = serLib.BaseAddress.from_address(addr);
@@ -41,4 +40,11 @@ const mkAddress = (addr) => {
   };
 };
 
+// TODO handle multi-assets
+const mkValue = (fromString, val) => {
+  [["", [["", fromString(val.coin().to_str())]]]];
+};
+
+const toHex = (bytes) => Buffer.from(bytes).toString("hex");
+
 const maybe = (just, nothing, x) => (x ? just(x) : nothing);
diff --git a/src/Lib/Serialization.purs b/src/Lib/Serialization.purs
index c1cbdda358..8b3a6d28a7 100644
--- a/src/Lib/Serialization.purs
+++ b/src/Lib/Serialization.purs
@@ -7,10 +7,15 @@ module Lib.Serialization
   ) where
 
 import Prelude
+import Undefined
+import Data.Argonaut (Json)
 import Data.BigInt (BigInt)
 import Data.Maybe (Maybe(..))
-import Types.Transaction (Address, TransactionUnspentOutput)
-import Undefined
+import Types.Transaction
+  ( Address
+  , TransactionUnspentOutput
+  , Value(..)
+  )
 
 newtype Hex
   = Hex String
@@ -22,6 +27,7 @@ utxoFromHex = _utxoFromBytes helper <<< _hexToBytes
     { just: Just
     , nothing: Nothing
     , fromString: undefined -- TODO
+    , decodeValue: undefined -- TODO
     }
 
 foreign import data Buffer :: Type
@@ -41,4 +47,5 @@ type UtxoHelper
   = { just :: String -> Maybe String
     , nothing :: Maybe String
     , fromString :: String -> BigInt
+    , decodeValue :: Json -> Value
     }